CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Revenue	$ 13,522	$ 14,340	$ 26,626	$ 32,045
Cost of revenue	10,833	10,778	21,009	24,368
Gross profit	2,689	3,562	5,617	7,677
Operating expenses:
Selling, general and administrative	3,522	4,722	7,256	9,670
Research and development	154	179	311	389
Restructuring charges	0	0	808	10
Loss on impairment	0	0	0	4,302
Depreciation	71	70	147	178
Amortization of definite-lived intangible assets	303	444	643	1,114
Total operating expenses	4,050	5,415	9,165	15,663
Operating loss	(1,361)	(1,853)	(3,548)	(7,986)
Interest expense, net	(49)	(187)	(103)	(428)
Gain on derivative instruments, net	0	47	0	4
Other income, net	4,637	24	4,638	53
Income (loss) before income taxes	3,227	(1,969)	987	(8,357)
(Benefit from) provision for income taxes	(4)	180	(39)	50
Net income (loss)	$ 3,231	$ (2,149)	$ 1,026	$ (8,407)
Net income (loss) per common share - basic (in dollars per share)	$ 0.16	$ (0.11)	$ 0.05	$ (0.41)
Net income (loss) per common share - diluted (in dollars per share)	$ 0.16	$ (0.11)	$ 0.05	$ (0.41)
Weighted average shares outstanding used to compute net income (loss) per share - basic (in shares)	20,647,426	20,407,958	20,638,116	20,375,446
Weighted average shares outstanding used to compute net income (loss) per share - diluted (in shares)	20,702,003	20,407,958	20,638,116	20,375,446